Support effect of Pd/AlPO4 catalyst in hydrogen storage of organic hydride method in the presence of CO

ABSTRACTHydrogenation properties of some amorphous Zr-Ni-Ti-V based alloys were investigated. Pressure-composition(P-C) isotherms and hydrogen storage capacities at room temperatures were measured and effects of elemental substitution of the components with Pd or Mn were studied. The alloy electrodes were prepared by using amorphous (Zr-Ni-Ti-V)-(Pd,Mn) alloys prepared by the melt spinning method. The amorphous alloys in the electrode kept their amorphous structures during cycles of charge and discharge. The electrochemical hydrogen storage capacities were strongly affected by the substitution amounts of Pd or Mn. Even a small amount of substitution, changed the equilibrium dissociation pressures of the alloy. In the present study, the rechargeable capacity was optimized up to H/M=0.5 for the alloy electrode with the composition of (Zr45Ni30Ti25)-3at%Pd. The slope in the P-C isotherm suggested that the maximum H/M of the alloy would exceed 1.0 at higher hydrogen pressure than 1.0 MPa, however, the wide distribution of hydrogen site energy in the amorphous hydride resulted in extremely large slope in P-C isotherms, and consequently restricted the rechargeable capacities of the electrodes.

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Hydrogen Storage in a Recyclable Organic Hydride: Kinetic Modeling of Methylcyclohexane Dehydrogenation Over 1.0 wt% Pt/θ-Al2O3

Energy Sources Part A Recovery Utilization and Environmental Effects ◽

10.1080/15567036.2011.585388 ◽

2011 ◽

Vol 33 (24) ◽

pp. 2264-2271 ◽

Cited By ~ 7

Author(s):

M. R. Usman ◽

R. Aslam ◽

F. Alotaibi

Keyword(s):

Hydrogen Storage ◽

Kinetic Modeling ◽

Organic Hydride ◽

Methylcyclohexane Dehydrogenation

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Hydrogen Storage in Liquid Organic Hydride: Producing Hydrogen Catalytically from Methylcyclohexane

Energy & Fuels ◽

10.1021/ef200829x ◽

2011 ◽

Vol 25 (10) ◽

pp. 4217-4234 ◽

Cited By ~ 115

Author(s):

Faisal Alhumaidan ◽

David Cresswell ◽

Arthur Garforth

Keyword(s):

Hydrogen Storage ◽

Organic Hydride

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Marked particle size and support effect of Pd catalysts upon the direct decomposition of nitric oxide

Catalysis Today ◽

10.1016/s0920-5861(02)00019-6 ◽

2002 ◽

Vol 73 (3-4) ◽

pp. 355-361 ◽

Cited By ~ 14

Author(s):

Shuichi Naito ◽

Mai Iwahashi ◽

Ikuo Kawakami ◽

Toshihiro Miyao

Keyword(s):

Nitric Oxide ◽

Particle Size ◽

Support Effect ◽

Direct Decomposition ◽

Pd Catalysts ◽

Effect Of Pd

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Rechargeable proton exchange membrane fuel cell containing an intrinsic hydrogen storage polymer

Communications Chemistry ◽

10.1038/s42004-020-00384-z ◽

2020 ◽

Vol 3 (1) ◽

Author(s):

Junpei Miyake ◽

Yasunari Ogawa ◽

Toshiki Tanaka ◽

Jinju Ahn ◽

Kouki Oka ◽

...

Keyword(s):

Hydrogen Storage ◽

Proton Exchange Membrane ◽

Clean Energy ◽

Proton Exchange ◽

Light Weight ◽

Major Barrier ◽

Energy Devices ◽

Organic Hydride ◽

Exchange Membrane ◽

Energy Conversion Devices

Abstract Proton exchange membrane fuel cells (PEMFCs) are promising clean energy conversion devices in residential, transportation, and portable applications. Currently, a high-pressure tank is the state-of-the-art mode of hydrogen storage; however, the energy cost, safety, and portability (or volumetric hydrogen storage capacity) presents a major barrier to the widespread dissemination of PEMFCs. Here we show an ‘all-polymer type’ rechargeable PEMFC (RCFC) that contains a hydrogen-storable polymer (HSP), which is a solid-state organic hydride, as the hydrogen storage media. Use of a gas impermeable SPP-QP (a polyphenylene-based PEM) enhances the operable time, reaching up to ca. 10.2 s mgHSP−1, which is more than a factor of two longer than that (3.90 s mgHSP−1) for a Nafion NRE-212 membrane cell. The RCFCs are cycleable, at least up to 50 cycles. The features of this RCFC system, including safety, ease of handling, and light weight, suggest applications in mobile, light-weight hydrogen-based energy devices.

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